AKG Acoustics GmbH

SR 4500



  • True diversity receiver with all-metal case
  • Available in eight UHF bands 30 MHz wide each, with up to 1,200 selectable frequencies
  • Using several frequency bands allows up to 70 channels to be operated simultaneously.
  • Transmitter battery status monitoring and tone code squelch
  • Auto Setup, Environment Scan, and Rehearsal functions for quick and easy setup
  • Backlit, programmable color display and jog wheel with selectable warning signal for ease of use
  • Output for controlling external devices
  • Integrated data interface for controlling and monitoring from a PC via System Architect™

The SR 4500 true diversity receiver provides maximum ease of use and the widest range of functions in its class. Its accurate battery life readout is a previously unavailable, invaluable advantage in live sound applications. A complete line of accessories makes the SR 4500 your first choice for every application. The transmitter uses a pilot tone to transmit battery status data to the receiver that displays the remaining battery capacity. The pilot tone decoder also allows the detection and display of other important information including the current position of the transmitter MUTE switch.

Auto Setup and Environment Scan functions automatically analyze the local RF environment, find usable frequency groups, and set frequencies. The optional HUB 4000 Q integrates the SR 4500 into a HiQnet® system. With the PC control software System Architect™ setting up and monitoring highly complex systems is incredibly easy. A logic output allows remote control of external devices, e.g., an automatic microphone mixer.

Naturally, the SR 4500 operates in an extremely wide UHF band (30 MHz) and each frequency preset provides up to 19 intermodulation-free channels*. The maximum number of selectable frequencies is 1200. Using several frequency bands allows you to operate as many as 70 channels simultaneously. A large, backlit color display and a jog wheel make the SR 4500 easy to use and a programmable LED ring indicates important system parameters at a glance.

Housed in a half-rack, all-metal case, the SR 4500 is the most compact, reliable, and powerful UHF receiver in its price bracket. 

The SR 4500 is fully compatible to its predecessor SR 4000. It offers two additional frequency bands in the range of 500 to 530 and 570 to 600 MHz, which give you even more flexibility in multichannel applications.

HiQnet® - System Architect
With the optional HUB 4000 Q, AKG wireless systems can be integrated into a HiQnet® system. The wireless system can be remote-controlled and monitored with the Harman control software System Architect™ (from a PC), the AKG Wireless iPhone App (from an iPhone/iPod touch/iPad) or VM2 (from a Soundcraft Vi mixing console). The setup and configuration of the frequency management of a multichannel wireless system is incredibly easy within the System Architect™ with tools like 1 Click Setup, RF Monitor, Device Manager and Environment Scan.

* The actual number of channels that can be used simultaneously depends on local frequency plans.

 System components for multichannel systems

 HiQnet®

 Wireless iPhone App

Consumer Alert (for US users)
Most users do not need a license to operate this wireless microphone system. Nevertheless, operating this microphone system without a license is subject to certain restrictions: The system may not cause harmful interference; it must operate at a low power level (not in excess of 50 milliwatts); and it has no protection from interference received from any other device.
Purchasers should also be aware that the FCC is currently evaluating use of wireless microphone systems, and these rules are subject to change. For more information, call the FCC at 1-888- CALL-FCC (TTY: 1-888-TELL-FCC) or visit the FCC’s wireless microphone website at www.fcc.gov/cgb/wirelessmicrophones

© 2012 AKG Acoustics GmbH

WMS 4500
The wireless receiver shall operate over a 30 MHz UHF frequency range in one of 8 bands from 500 MHz to 863 MHz, with a wide range of possible frequency settings. The wireless microphone system shall incorporate factory-optimized sets of both sending and receiving frequency modules that are built into both transmitters and receivers. Each frequency set shall comprise a 30 MHz UHF band and offer up to 1,200 discrete operating frequencies within that band. The receiver shall operate on the true diversity principle, and the switching circuit shall be inaudible. Total harmonic distortion at 1 kHz for rated deviation shall be no greater than 0.3%. The receiver shall provide for a manual squelch adjustment as well as an automatic squelch option (tone code squelch) for optimum system operation. Audio output shall include a balanced XLR connector as well as an unbalanced 6.3 mm / 1/4-inch jack connectors. The output from the 3-pin XLR-type connector shall be adjustable in 3 steps (-30, 0, +6 dB). A RJ11 data port for connecting HUB 4000 Q communicating with Harman System Architect PC software. A logic out connector shall be provided. The receiver shall be controlled by a jog wheel and shall provide a backlit color display as well as a programmable LED ring (red/green) showing the overall system status. The wireless receiver shall be the AKG Acoustics Model SR 4500.

The wireless system shall operate over a 30 MHz UHF frequency range in one of 8 bands from 500 to 863 MHz, with a wide range of possible frequency settings. The wireless microphone system shall incorporate factory-optimized sets of both transmission and receiving frequency modules that are programmed into both transmitters and receivers. Each frequency set shall comprise a 30 MHz UHF band and offer up to 1,200 discrete operating frequencies within that band, with transmitter power not exceeding 50 milliwatts. Both handheld and bodypack type transmitters shall be provided. The bodypack transmitter shall accommodate both microphone and line level inputs. The transmitters shall operate with a companding system that is complemented by the receiver, providing an A-weighted system dynamic range in excess of 120 dB. The transmitters shall indicate input overload via an LED indicator and on a backlit display battery lifetime shall be displayed in hours as well as the transmitting frequency. Handheld transmitters shall have a maximum diameter of 39 mm and a length, including antenna, no greater that 239 mm. The wireless microphone system shall be the AKG Acoustics Model WMS 4500.

Available Frequency Bands: 500-530, 570-600, 650-680, 680-710, 720-750, 760-790, 790-820 und 835-862 MHz
 


Carrier frequency range500 to 530, 570 to 600, 650 to 680, 680 to 710, 720 to 750, 760 to 790, 790 to 820, 835 to 863 MHz
Audio bandwidth35 to 20,000 Hz
THD<0.3% typical
Signal/noise ratio>120 dB(A) typical
ModulationFM
Audio outputsbalanced 3-pin XLR; unbalanced TS 1/4" jack; output level adjustable to -30, 0, +6 dB
Dimensions200 x 44 x 190 mm (7.8 x 1.7 x 7.4 in.)
Net weight972 g (2.2 lbs.)
Patent(s)Remaining playing time (Patent no. AT 408.280, GB 2.349.230, US 6.344.730)